297 lines
11 KiB
Python
297 lines
11 KiB
Python
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# Copyright 2013 Red Hat, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import sys
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from oslo_serialization import jsonutils
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import testscenarios
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import oslo_messaging
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from oslo_messaging._drivers import common as exceptions
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from oslo_messaging.tests import utils as test_utils
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load_tests = testscenarios.load_tests_apply_scenarios
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EXCEPTIONS_MODULE = 'builtins'
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OTHER_EXCEPTIONS_MODULE = 'exceptions'
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class NovaStyleException(Exception):
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format = 'I am Nova'
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def __init__(self, message=None, **kwargs):
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self.kwargs = kwargs
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if not message:
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message = self.format % kwargs
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super(NovaStyleException, self).__init__(message)
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class KwargsStyleException(NovaStyleException):
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format = 'I am %(who)s'
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def add_remote_postfix(ex):
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ex_type = type(ex)
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message = str(ex)
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str_override = lambda self: message
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new_ex_type = type(ex_type.__name__ + "_Remote", (ex_type,),
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{'__str__': str_override,
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'__unicode__': str_override})
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new_ex_type.__module__ = '%s_Remote' % ex.__class__.__module__
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try:
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ex.__class__ = new_ex_type
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except TypeError:
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ex.args = (message,) + ex.args[1:]
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return ex
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class SerializeRemoteExceptionTestCase(test_utils.BaseTestCase):
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_add_remote = [
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('add_remote', dict(add_remote=True)),
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('do_not_add_remote', dict(add_remote=False)),
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]
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_exception_types = [
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('bog_standard', dict(cls=Exception,
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args=['test'],
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kwargs={},
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clsname='Exception',
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modname=EXCEPTIONS_MODULE,
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msg='test')),
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('nova_style', dict(cls=NovaStyleException,
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args=[],
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kwargs={},
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clsname='NovaStyleException',
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modname=__name__,
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msg='I am Nova')),
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('nova_style_with_msg', dict(cls=NovaStyleException,
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args=['testing'],
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kwargs={},
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clsname='NovaStyleException',
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modname=__name__,
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msg='testing')),
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('kwargs_style', dict(cls=KwargsStyleException,
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args=[],
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kwargs={'who': 'Oslo'},
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clsname='KwargsStyleException',
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modname=__name__,
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msg='I am Oslo')),
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]
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@classmethod
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def generate_scenarios(cls):
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cls.scenarios = testscenarios.multiply_scenarios(cls._add_remote,
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cls._exception_types)
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def test_serialize_remote_exception(self):
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try:
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try:
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raise self.cls(*self.args, **self.kwargs)
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except Exception as ex:
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# Note: in Python 3 ex variable will be cleared at the end of
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# the except clause, so explicitly make an extra copy of it
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cls_error = ex
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if self.add_remote:
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ex = add_remote_postfix(ex)
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raise ex
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except Exception:
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exc_info = sys.exc_info()
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serialized = exceptions.serialize_remote_exception(exc_info)
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failure = jsonutils.loads(serialized)
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self.assertEqual(self.clsname, failure['class'], failure)
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self.assertEqual(self.modname, failure['module'])
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self.assertEqual(self.msg, failure['message'])
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self.assertEqual([self.msg], failure['args'])
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self.assertEqual(self.kwargs, failure['kwargs'])
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# Note: _Remote prefix not stripped from tracebacks
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tb = cls_error.__class__.__name__ + ': ' + self.msg
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self.assertIn(tb, ''.join(failure['tb']))
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SerializeRemoteExceptionTestCase.generate_scenarios()
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class DeserializeRemoteExceptionTestCase(test_utils.BaseTestCase):
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_standard_allowed = [__name__]
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scenarios = [
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('bog_standard',
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dict(allowed=_standard_allowed,
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clsname='Exception',
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modname=EXCEPTIONS_MODULE,
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cls=Exception,
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args=['test'],
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kwargs={},
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str='test\ntraceback\ntraceback\n',
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remote_name='Exception',
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remote_args=('test\ntraceback\ntraceback\n', ),
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remote_kwargs={})),
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('different_python_versions',
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dict(allowed=_standard_allowed,
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clsname='Exception',
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modname=OTHER_EXCEPTIONS_MODULE,
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cls=Exception,
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args=['test'],
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kwargs={},
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str='test\ntraceback\ntraceback\n',
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remote_name='Exception',
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remote_args=('test\ntraceback\ntraceback\n', ),
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remote_kwargs={})),
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('nova_style',
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dict(allowed=_standard_allowed,
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clsname='NovaStyleException',
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modname=__name__,
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cls=NovaStyleException,
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args=[],
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kwargs={},
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str='test\ntraceback\ntraceback\n',
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remote_name='NovaStyleException_Remote',
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remote_args=('I am Nova', ),
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remote_kwargs={})),
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('nova_style_with_msg',
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dict(allowed=_standard_allowed,
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clsname='NovaStyleException',
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modname=__name__,
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cls=NovaStyleException,
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args=['testing'],
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kwargs={},
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str='test\ntraceback\ntraceback\n',
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remote_name='NovaStyleException_Remote',
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remote_args=('testing', ),
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remote_kwargs={})),
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('kwargs_style',
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dict(allowed=_standard_allowed,
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clsname='KwargsStyleException',
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modname=__name__,
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cls=KwargsStyleException,
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args=[],
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kwargs={'who': 'Oslo'},
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str='test\ntraceback\ntraceback\n',
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remote_name='KwargsStyleException_Remote',
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remote_args=('I am Oslo', ),
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remote_kwargs={})),
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('not_allowed',
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dict(allowed=[],
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clsname='NovaStyleException',
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modname=__name__,
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cls=oslo_messaging.RemoteError,
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args=[],
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kwargs={},
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str=("Remote error: NovaStyleException test\n"
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"[%r]." % 'traceback\ntraceback\n'),
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msg=("Remote error: NovaStyleException test\n"
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"[%r]." % 'traceback\ntraceback\n'),
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remote_name='RemoteError',
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remote_args=(),
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remote_kwargs={'exc_type': 'NovaStyleException',
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'value': 'test',
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'traceback': 'traceback\ntraceback\n'})),
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('unknown_module',
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dict(allowed=['notexist'],
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clsname='Exception',
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modname='notexist',
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cls=oslo_messaging.RemoteError,
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args=[],
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kwargs={},
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str=("Remote error: Exception test\n"
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"[%r]." % 'traceback\ntraceback\n'),
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msg=("Remote error: Exception test\n"
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"[%r]." % 'traceback\ntraceback\n'),
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remote_name='RemoteError',
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remote_args=(),
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remote_kwargs={'exc_type': 'Exception',
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'value': 'test',
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'traceback': 'traceback\ntraceback\n'})),
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('unknown_exception',
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dict(allowed=[],
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clsname='FarcicalError',
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modname=EXCEPTIONS_MODULE,
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cls=oslo_messaging.RemoteError,
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args=[],
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kwargs={},
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str=("Remote error: FarcicalError test\n"
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"[%r]." % 'traceback\ntraceback\n'),
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msg=("Remote error: FarcicalError test\n"
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"[%r]." % 'traceback\ntraceback\n'),
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remote_name='RemoteError',
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remote_args=(),
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remote_kwargs={'exc_type': 'FarcicalError',
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'value': 'test',
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'traceback': 'traceback\ntraceback\n'})),
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('unknown_kwarg',
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dict(allowed=[],
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clsname='Exception',
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modname=EXCEPTIONS_MODULE,
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cls=oslo_messaging.RemoteError,
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args=[],
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kwargs={'foobar': 'blaa'},
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str=("Remote error: Exception test\n"
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"[%r]." % 'traceback\ntraceback\n'),
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msg=("Remote error: Exception test\n"
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"[%r]." % 'traceback\ntraceback\n'),
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remote_name='RemoteError',
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remote_args=(),
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remote_kwargs={'exc_type': 'Exception',
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'value': 'test',
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'traceback': 'traceback\ntraceback\n'})),
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('system_exit',
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dict(allowed=[],
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clsname='SystemExit',
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modname=EXCEPTIONS_MODULE,
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cls=oslo_messaging.RemoteError,
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args=[],
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kwargs={},
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str=("Remote error: SystemExit test\n"
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"[%r]." % 'traceback\ntraceback\n'),
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msg=("Remote error: SystemExit test\n"
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"[%r]." % 'traceback\ntraceback\n'),
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remote_name='RemoteError',
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remote_args=(),
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remote_kwargs={'exc_type': 'SystemExit',
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'value': 'test',
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'traceback': 'traceback\ntraceback\n'})),
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]
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def test_deserialize_remote_exception(self):
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failure = {
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'class': self.clsname,
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'module': self.modname,
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'message': 'test',
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'tb': ['traceback\ntraceback\n'],
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'args': self.args,
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'kwargs': self.kwargs,
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}
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serialized = jsonutils.dumps(failure)
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ex = exceptions.deserialize_remote_exception(serialized, self.allowed)
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self.assertIsInstance(ex, self.cls)
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self.assertEqual(self.remote_name, ex.__class__.__name__)
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self.assertEqual(self.str, str(ex))
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if hasattr(self, 'msg'):
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self.assertEqual(self.msg, str(ex))
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self.assertEqual((self.msg,) + self.remote_args, ex.args)
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else:
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self.assertEqual(self.remote_args, ex.args)
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